Note 27 — Chapter II · Primitive Systems of Currency.
Reading edition
For shell money in the Caroline Islands cf. Kubary’s Ethnographische Beiträge zur Kenntnis des Karolinen Archipels (Leipzig, 1889); in the Pelew Islands cf. Karl Semper, Die Pelau Inseln (Leipzig, 1873), p. 60; and for shell money in general cf. R. Stearn’s Ethno-conchology (Washington, 1889).